Abstract: A microgrid with a high voltage direct current (HVDC) source for efficiently and safely distributing power to decentralized loads includes: at least a main HVDC power supply connectable in input to an AC grid and in output to a main DC distribution network and loads system in output, the main HVDC power supply having energy reserve means and a main switch-based fault isolator or main FI, the main DC distribution network and loads system including: a maintrunk bus, and subtrunks buses and/or front end local loads cells connected in parallel to the maintrunk bus, and at each branching of a subtrunk bus and a load or of a subtrunk bus of rank n?1 and a subtrunk bus of rank n, a local switch-based fault isolator or local FI, n being an integer comprised in the range [1, N]. A smart main controller including microcontrollers for smart operation is also included.

Abstract: A microgrid with a high voltage direct current (HVDC), source, a high voltage alternating current (HVAC) source respectively, for efficiently and safely distributing power to decentralized loads, includes: at least a main or central HVDC, respective HVAC, power supply connectable in input to an AC grid and in output to a main DC, respective AC, distribution network, and loads system in output, having an energy reserve means, and including a main fault isolator or main FI; the main DC, respective AC, distribution network, and loads system including a maintrunk bus, and subtrunks buses and/or front end local loads cells connected in parallel to the maintrunk bus, and including, at each branching of a subtrunk and a load or of a subtrunk of order (N?1) and a subtrunk of order N, a local fault isolator or local FI; and a smart main controller including microcontrollers, for smartly operating adjacent local FIs.

Abstract: A method for determining virtually a set of design allowables for a composite material is disclosed. The method includes receiving information about the composite material and a given set of architectures, available test data of the composite material, and a test matrix identifying desired tests to be performed virtually on the composite material and different set of architectures. Using the material information and available test data, a reverse engineering process is used to determine micromechanical material properties. Finite element models of relevant test specimens are generated according to the test matrix and integrating the micromechanical material properties, and are analyzed. A set of allowables and associated properties is generated based on the finite element analyses results.